Build universal library binaries on Mac OSX

I would like to request a build option to create universal binaries on Mac OSX. The resulting library would support i386, x86_64 and ppc platforms.

For reference, Jake F. posted a work-around to target different platforms -

> The thrift build is not setup to create a universal binary currently. if
> you would like to create a ticket for this we can take a look at making
> this a global configure option. To set the arch you can pass
> CPPFLAGS='-arch i386' to configure.
[edit: additionally pass LDFLAGS and CXXFLAGS with the same architecture]
> You should be able to use this for each arch you want to create and then
> use lipo to combine them into a universal binary.
>
> -Jake